Problem Display
PID: 168836 (4kN1n/Bppp1p1N/B2P2n1/R2Pp1Q1/R3P3/1K6/8/8 w - - 0 1)

Popov, Grigory Leontievich

1st HM., SuperProblem 027. TT, 2012

4kN1n/Bppp1p1N/B2P2n1/R2Pp1Q1/R3P3/1K6/8/8

#3

11 + 8


6490 yacpdb 2018

SOLUTION


  • SOUND
  • Sets
    • 1...Sf4
      • 2.Qe7#
    • 1...Sh4
      • 2.Qe7#
    • 1...Se7
      • 2.Qxe7#
    • 1...Sxf8
      • 2.Qe7#
  • Tries
    • 1.Sf6+?
      • 1...Kxf8
        • 2.Qh6#
      • 1...Kd8!
    • 1.Qf5?
      • threat
        • 2.Qxd7#
      • 1...Kd8
        • 2.Qxd7#
      • 1...Sxf8!
  • Keys
    • 1.Qf6!
      • 1...bxa6
        • 2.Rb4
          • threat
            • 3.Rb8#
          • 2...Se7
            • 3.Qxe7#
      • 1...cxd6
        • 2.Qxd6
          • threat
            • 3.Qxd7#
          • 2...Kd8
            • 3.Qxd7#
          • 2...Sxf8
            • 3.Qxf8#
      • 1...b5
        • 2.Rxb5
          • threat
            • 3.Rb8#
          • 2...Se7
            • 3.Qxe7#
      • 1...b6
        • 2.Bc8
          • threat
            • 3.Bxd7#
          • 2...Sxf8
            • 3.Qe7#
          • 2...Se7
            • 3.Qxe7#
      • 1...c5
        • 2.Rxc5
          • threat
            • 3.Rc8#
          • 2...Se7
            • 3.Qxe7#
      • 1...c6
        • 2.Bb6
          • threat
            • 3.Qd8#
          • 2...Se7
            • 3.Qxe7#

FEATURES


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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).